An lvalue subroutine for accessing the requirements hash reference field of the Class::Trait::Config object.
Note,
the requirements field is a hash reference to speed requirement lookup,
the values of the hash are simply booleans.

An lvalue subroutine for accessing the conflicts hash reference field of the Class::Trait::Config object.
Note,
the conflicts field is a hash reference to speed conflict lookup,
the values of the hash are simply booleans.